examples/cmake : Add a cmake to the examples directory

The CI never checks the exampels, which is pretty bad form, so add this.
The will allow easier build checking, and we can also then check
the examples with Coverity (which only checks things that are built).

Format the cmake with cmake-format to get ready for new standard.

Signed-off-by: Robin Getz <[email protected]>

CMakeLists.txt

@@ -46,6 +46,7 @@ endif()
 
 option(WITH_NETWORK_BACKEND "Enable the network backend" ON)
 option(WITH_TESTS "Build the test programs" ON)
+option(WITH_EXAMPLES "Build examples" OFF)
 
 if (WITH_TESTS)
 	set(NEED_THREADS 1)
@@ -341,6 +342,9 @@ endif()
 if(WITH_TESTS)
 	add_subdirectory(tests)
 endif()
+if(WITH_EXAMPLES)
+	add_subdirectory(examples)
+endif()
 
 if (WIN32)
 	set(LIBIIO_ORIGINAL_FILENAME libiio.dll)

examples/CMakeLists.txt

@@ -0,0 +1,74 @@
+cmake_minimum_required(VERSION 2.8.7)
+
+project(ad9361-iiostream C)
+project(ad9371-iiostream C)
+project(adrv9009-iiostream C)
+project(dummy-iiostream C)
+
+if (APPLE)
+    # Add relative rpath to iio library (which is in the same framework)
+    set(CMAKE_INSTALL_RPATH "@executable_path/../..")
+    set(CMAKE_BUILD_WITH_INSTALL_RPATH ON)
+endif ()
+
+if (MSVC)
+    include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../deps/wingetopt/src)
+    set(GETOPT_C_FILE
+        ${CMAKE_CURRENT_SOURCE_DIR}/../deps/wingetopt/src/getopt.c
+    )
+endif (MSVC)
+
+if (WIN32)
+    set(LIBIIO_ORIGINAL_FILENAME)
+    set(LIBIIO_RC ${CMAKE_CURRENT_BINARY_DIR}/properties.rc)
+    configure_file(../properties.rc.cmakein ${LIBIIO_RC} @ONLY)
+endif ()
+
+if (CMAKE_COMPILER_IS_GNUCC)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DIIO_CHECK_RET")
+endif ()
+
+add_executable(
+    ad9361-iiostream ad9361-iiostream.c ${GETOPT_C_FILE} ${LIBIIO_RC}
+)
+add_executable(
+    ad9371-iiostream ad9371-iiostream.c ${GETOPT_C_FILE} ${LIBIIO_RC}
+)
+add_executable(
+    adrv9009-iiostream adrv9009-iiostream.c ${GETOPT_C_FILE} ${LIBIIO_RC}
+)
+add_executable(dummy-iiostream dummy-iiostream.c ${GETOPT_C_FILE} ${LIBIIO_RC})
+
+target_link_libraries(ad9361-iiostream iio)
+target_link_libraries(ad9371-iiostream iio)
+target_link_libraries(adrv9009-iiostream iio)
+target_link_libraries(dummy-iiostream iio)
+
+set(IIO_EXAMPLES_TARGETS ad9361-iiostream ad9371-iiostream adrv9009-iiostream
+                         dummy-iiostream
+)
+
+find_library(CURSES_LIBRARY curses)
+find_library(CDK_LIBRARY cdk)
+
+if (PTHREAD_LIBRARIES
+    AND CURSES_LIBRARY
+    AND CDK_LIBRARY
+)
+    find_path(LIBCKD_INCLUDE_DIR cdk.h PATH_SUFFIXES cdk)
+    include_directories(${LIBCKD_INCLUDE_DIR})
+    project(iio-monitor C)
+    add_executable(iio-monitor iio-monitor.c)
+    target_link_libraries(
+        iio-monitor iio ${PTHREAD_LIBRARIES} ${CURSES_LIBRARY} ${CDK_LIBRARY}
+    )
+    set(IIO_TESTS_TARGETS ${IIO_TESTS_TARGETS} iio-monitor)
+endif ()
+
+set_target_properties(
+    ${IIO_TESTS_TARGETS} PROPERTIES C_STANDARD 99 C_STANDARD_REQUIRED ON
+                                    C_EXTENSIONS OFF
+)
+
+# We don't install any of these, they are examples, not tools. We build them to
+# make sure they build/work, not to deploy them.

examples/README.md

@@ -3,8 +3,9 @@
 The libiio is a cross platform library for interfacing with Linux IIO devices. 
 
 These are some primitive examples of using the libiio library. 
-These are not compiled or tested during a nominal library cmake/make process and must be compiled separately.
-A linux Makefile is included.
+
+These are only build if the -DWITH_EXAMPLES=ON is provided to the standard Cmake.
+
 While the libiio library is tested on many operating systems, these examples are only tested on Linux.
 
 More examples using all languages supported by libiio are encouraged to be added here.

examples/iio-monitor.c

@@ -23,7 +23,7 @@
 #define _GNU_SOURCE
 #define _DEFAULT_SOURCE
 
-#include <cdk/cdk.h>
+#include <cdk.h>
 #include <locale.h>
 #include <pthread.h>
 #include <stdbool.h>